A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 6110-00-068-8700
NSN 6240-00-194-5999
NSN 6135-00-904-6780
NSN 2925-00-573-9556
NSN 5965-00-324-2428
NSN 5905-00-018-1607
NSN 5945-01-503-9292
NSN 5985-01-153-2657
NSN 5999-00-020-5277
NSN 6240-00-781-9899
NSN 2925-00-964-7128
NSN 5925-01-157-2209